An eye exam is a series of tests conducted by an optometrist or ophthalmologist to assess vision and eye health. During the exam, various tools and techniques are used to check for refractive errors, such as nearsightedness or farsightedness, and to evaluate the overall condition of the eyes. Eye exams can also detect common eye diseases, including glaucoma and cataracts, as well as other health issues like diabetes and high blood pressure. Regular eye exams are important for maintaining good vision and ensuring early detection of potential problems.